Telephone crossbar switch, made by Swedish Ericsson, Stockholm, Sweden, 1921.
Crossbar switching dates back to the earliest days of manual telephone switchboards, which used sets of overlapping brass bars with holes at the intersections for brass plugs to connect telephone calls. This switch had ten horizontal and ten vertical bars, so could support up to 100 subscribers. Crossbar switches needed less maintenance than step-by-step switches exchanges, and operated more simply.
- Object Number:
- electric switch
- component - object
- Donated by L. M. Ericsson
Cite this page
We encourage the use and reuse of our collection data.
Data in the title, made, maker and details fields are released under Creative Commons Zero
Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence
Download catalogue entry as json
View manifest in IIIF viewer
Download manifest IIIF
Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.